/**
 * Created by caelan on 2018/10/20.
 */
Date.prototype.format = function (fmt) {
  var o = {
    "M+": this.getMonth() + 1, //月份
    "d+": this.getDate(), //日
    "h+": this.getHours(), //小时
    "m+": this.getMinutes(), //分
    "s+": this.getSeconds(), //秒
    "q+": Math.floor((this.getMonth() + 3) / 3), //季度
    "S": this.getMilliseconds() //毫秒
  };
  if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
  for (var k in o)
    if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
  return fmt;
};


// 拖拽drag
$.fn.Drag = function() {
  var M = false;
  var Rx, Ry;
  var t = $(this);
  t.mousedown(function(event) {
    Rx = event.pageX - (parseInt(t.css("left")) || 0);
    Ry = event.pageY - (parseInt(t.css("top")) || 0);
    t.css("position", "absolute");
    M = true;
  });
  $(document).mousemove(function(event) {
    if (M) {
      var bodyWid = document.body.clientWidth,
        bodyHid = document.body.clientHeight;
      t.css({
        top: event.pageY - Ry,
        left: event.pageX - Rx
      }).css('cursor', 'move');
    }
  }).mouseup(function(event) {
    M = false;
    t.css('cursor', "default");
  });
};